Alcohol-lamp.



No. 696.507. Patented Apr. l, |902.

S. STERNAU L. STHASSBURGER.

ALCOHOL LAMP.

(Application filed Oct. 30, 1901.)

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SIGMUND STERNAU AND LIONEL STRASSBURGER, OF NEW YORK, N. Y., ASSIGNORSTO S. STERNAU & CO., OF NEW YORK, N. Y., A

OOPARTNERSHIP.

ALGOlrlOhnfLAllilPl SPECIFICATION forming part of Letters Patent No.696,507, dated April 1,

Application filed October 30, 1901l Serial No. 80,494. (Nomadei.)

To all 'whom it nfl/ay concern: y Be itkncwn that We, SIGMUND STERNAUand LIONEL SrRAssBURenR, citizens of the United States, residing in theborough of Manhattan, city of New York, State of New York, haveinventedacertain new and useful Improvement in Alcohol-Lamps, of which thefollowing is a description.

Our invention relates to new and useful improvements in alcohol-lamps ofthe type described and claimed in application for Letters Patent filedMarch 14, 1000, by John P. Steppe, of New York city, and numberedserially 8,589. The lamp embodied in said application employs a fontfrom the top of which extends a wick-tube containing a wick-likematerial which dips into the alcohol in the font, said wick-tubecarrying a burner-tube at its upper end, the latter being filled withasbestos or similar nou-combustible absorbent material and formed on itsexterior with openings disclosing the absorbent lling and permittingcombustion of the alcohol. In order to regulate the flame with saidprior lamp, a regulating-tube is used relatively movable with respect tothe burner-tube, so

as to cover or disclose the openings therein, the extreme closingmovement of the regulating-tube with respect to the burner-tube cuttingoft a series of gas-vents formed in a cap at the top 0f the burner-tubeand through which the alcohol will be consumed in gaseous form after themain openings have been covered to give a very low flame. In order tofill the font of the lamp of said application, a filling-tube is mountedconcentrically within the burner and wick tubes, being provided at itsuppervend with a closing-cap. With the specific form of lamp shown insaid application the burner and wick tubes are rigidly carried by thefont and the regulatingtube is movable up and down to adjust the size ofthe flame, so that in consequence the lamp will be always of a definiteheight from its base to the top of the burner. Furthermore, with theprior construction since a movable regulating-tube is used specialprovision is made for accommodating any unconsumed alcohol which mayiiow out of the 5o burner within the space between the burnertube andthe regulating-tube, and in the application in question this alcohol ispermitted to flow into a receiving-chamber below the font, from which itis removed by an auxiliary wick leading to the burner.

Our present invention presents certain improvements in the constructionof the prior lamp by which its cost will be reduced, its efficiencyincreased, and the general compactness and appearance of the deviceimproved. To this end the present lamp comprises a suitable font, fromwhich. extends a permanently located regulating tube. Mounted within theregulating-tube so as to be vertically movable therein is a combinedwick and burner tube, the upper end of which is formed with suitableburner-openings and carrying a cap having gas-vents therein. The Wickand burner tube is also formed on its interior with a filling-tubeclosed by a suitable cap. of the wick and burner tube is filled with anon-combustible absorbent material, such as asbestos, and the lowerportion thereof contains a wick, which dips into the alcohol. Improvedmechanism is employed for raising and lowering the wick and burner tube,so as to move the same relatively to the regulating-tube, and therebycut off the burneropenings and also eventually the gas-vents. This makesthe construction somewhat simpler than that of the prior application,and since the burner, when the flame lhas been extinguished, will be ina depressed position the Vertical height of the lamp will be rcduced toa minimum. Furthermore, since a stationary regulating-tube is used whichThe upper portion makes a perfectly tight joint with the top of the fontany unconsumed alcohol in the burner will simply iiow through theregulating-tube into the font, and hence no special devices will berequired to accommodate the same.

In order that the invention may be better understood, attention isdirected to the accompanying drawings, forming part of thisspecification, in which Figure l is a sectional view of the improvedlamp; Fig. 2, an enlarged detail view of the wick and burner tube andthe filling-tube IOO therein, and Fig. 3 an enlarged detail view showingthe special packing employed for the,

shaft of the regulating device.

In all of the above views corresponding parts are represented by thesame numerals of reference.

The body 1 of the lamp is provided with a partition 2, forming a fontbeneath it for containing the alcohol. Extending up from the partition 2is a. regulating-tube 3, having a contracted or reduced upper portion 4.The body 1 is provided with a top 5, which fits tightly around theregulating-tube immediately above the shoulder thereon, and said top ispreferably provided with a threaded sleeve 6, onto which a cap 7 isscrewed when the lamp is out of use to prevent evaporation of thealcohol. Mounted within the regulating-tube 3 and guided at its top bythe reduced portion 4E thereof and fitting closely at its bottom in anopening in the partition 2 is a wick and burner tube 8. The wick andburnertube is provided at its upper portion with a filling 9, ofasbestos or other suitable non-combustible absorbent material, and atits lower portion with one or more wicks 10, which extend through thebottom of the wick and burner tube and dip into the alcohol in the font.Within the wick and burner tube is a filling-tube 11, and the spacebetween the filling-tube and the wick and burner tube is filled with theasbestos packing 9 and the wick-like material 10, as shown. Screwed ontothe outside of the filling-tube at its top is a ring 12, formed withoutwardly-opening gas-vents 13 therein,and engaging the threads of thisring is a cap 14, which closes the top of the filling-tube. tube isprovided near its upper end with a series of burner-openings 15, whichpreferably are in the form of elongated slots inclined from theperpendicular and arranged in a horizontal series. In order to move thewick and burner tube with respect to the regulating-tube, any suitableadjusting mechanism may be employed. We prefer, however, to carry a rack16 on the wick and burner tube and to engage therewith a pinion 17 on aregulating-shaft 18, having a thumb-wheel 19 at its end, made,preferably, of vulcanite or other heat-insulating material. The shaft 18is formed with a collar 2O thereon, which fits against a packing 21,surrounding the opening in the regulating-tube, and engaging said collaris a spiral spring 22, which forces a second packing-ring 23 against asleeve 211, which surrounds the shaft, the latter packing-ringclosin gthe space between said sleeve and the shaft. The sleeve 24. engages aninteriorlythreaded nipple 25 on the regulatingtube, so-that by adjustingsaid sleeve toward or away from the regulating-tube the pressure on thepackings 21 and 23 can be properly regulated.

In operation the wick or wicks 10 absorb the alcohol and convey thelatter to the asbestos packing 9, which becomes saturated.

The wick and burner By turning the shaft 18 the burner-openings 15 willbe disclosed above the regulating-tube and the flame can be started. Bylowering the burner the burner-openings 15 will be graduallycut off bythe upper end of the regulating-tube until the liame at saidburneropenings is extinguished. The heat of the burner will, however,continue to vaporize the alcohol, which in gasform will be proj ectedthrough the gas-vents 13 and there consumed. The final downward movementof the burner carries the gas-vents within the regulating-tube andengages a flange 26 on the ring 12 with the top of said tube, so as toextinguish the jets. If in practice any alcohol from the burner isunconsumed, it simply flows down through the burner-tube and into thefont. After the burner has been lowered to its extinguished position thecap 7 may be screwed onto the ring 6 to prevent further volatilizationof the alcohol.

It will thus be seen that the present lamp is somewhat simpler and ismore compact and economical in construction than the lamp of saidapplication, although it embodies the same principles as the prior lamp.

Having now described our invention, what we claim as new, and desire tosecure by Letters Patent, is as follows:

1. In an alcohol-lamp, the combination of a font, a regulating-tuberigidly carried by the font, a burner supplied with alcohol from thefont and movable toward and away from the regulating-tube, and means formoving said burner, substantially as set forth.

2. In an alcohol-lamp, the combination of a font, a regulating-tuberigidly carried by the font, a burner movable toward and away from theregulating tube, a series of gasvents at the top of the burner arrangedto be covered by the downward movement of the burner in theregulating-tube, and means for moving said burner, substantially as setforth.

3. In an alcohol-lamp, the combination of a font, a regulating-tuberigidly carried by the font, a wick and burner tube movable within theregulating-tube, said wick and burner tube carrying an asbestos packingin its upper portion and a wick-like material in its lower portion whichdips in the alcohol in the font, and means for moving said wick andburner tube, substantially as set forth.

11. In an alcohol-lamp, the combination of a font, a regulating-tuberigidly carried by the font, a wick and burner tube movable within theregulating-tube, said wick and burner tube carrying an asbestos packingin its upper portion and a wick-like material in its lower portion whichdips in the alcohol in the font, means for moving said wick and burnertube, and a iilling-tube mounted concentrically within the wick andburner tube, substantially as set forth.

5. In an alcohol-lam p, the combination of a font, a regulating-tuberigidly carried by the font, a wick and burner tube movable within theregulating-tube and communicating IOO IIO

with the font, said Wick -and burner tube havingiburner-openngs near itsupper end arranged to be covered by the regulatingtube, a, rack on theWick and burner tube Within the regulating-tube, a pinionengaging saidrack, and a. shaft for rotating said pinion, substantially as Vsetforth.

This specification signed and witnessed this 25th day of October, `1901.

SIGMUND STERNAU. LIONEL STRASSBURGER. Witnesses:

THos. F. BARRY, MAY` I. HICKEY.

